Need help to replace value to zero(enable)

Question

I need help to replace an assignment below:

  12345678 = {
  CreatedOnToolsVersion = *.*.*;
  DevelopmentTeam = *;
  LastSwiftMigration = *;
  ProvisioningStyle = Manual;
  SystemCapabilities = {
  com.apple.ApplePay = {
  enabled = 1;
  };
  com.apple.SafariKeychain = {
  enabled = 0; };
  com.apple.SafariKeychain = {
  enabled = 0; 
  };
  };`
  };
  };

want the output to contain

 com.apple.ApplePay = {
      enabled = 0;

I tried with

sed '/SystemCapabilites = {\n/ com.apple.ApplePay = {\n/     enabled =0 ;\'

outputs

error:- sed: 1: "/SystemCapabilites = {\ ...": command c expects \ followed by text

`value com.apple.Push` doesn't appear in your input so how can you change it? Clarify and fix that and [edit] your question to show the full desired output given your posted sample input plus what you have tried so far. — Ed Morton, Aug 15 '17 at 18:30
sorry I want to change change com.apple.ApplePay = { enabled = 1; — att, Aug 15 '17 at 18:44
please fix your question above and include your best attempt to solve your problem. StackOverflow is about helping people fix their programming code. Please read http://stackoverflow.com/help/how-to-ask , http://stackoverflow.com/help/dont-ask , http://stackoverflow.com/help/mcve and take the [tour](http://stackoverflow.com/tour) before posting more Qs here. Good luck. — shellter, Aug 15 '17 at 18:45
Again, include in your question the full expected output given the input you provided. Also format your code just like your formatted your input data so it's legible. — Ed Morton, Aug 15 '17 at 18:56
I presume there are multiple `enabled = 1;` in your file. So a `sed 's/enabled\ =\ 1;/enabled\ =\ 0;/g'` is not applicable for your use case. — Hakan Baba, Aug 15 '17 at 19:36
Also please re-format the sed command you have tried already. It is not easy to parse what was the command and what was the output. — Hakan Baba, Aug 15 '17 at 19:37

Hakan Baba · Accepted Answer · 2017-08-15T20:09:43.260

Using sed to replace multi line strings is notoriously difficult

I can suggest to use perl. This prints out the modified file.

perl -0777 -pe 's/com.apple.ApplePay = {\s*\n\s*enabled\ =\ 1;/com.apple.ApplePay = {\nenabled\ =\ 0;/g' file1 2> /dev/null

I have not taken into consideration the white spaces in the output. Depending on the indentation of your file you can set spaces before enabled\ =\ 0

The input file is called file1 in my example.

Input

$ cat file1
12345678 = {
CreatedOnToolsVersion = *.*.*;
DevelopmentTeam = *;
LastSwiftMigration = *;
ProvisioningStyle = Manual;
SystemCapabilities = {
com.apple.ApplePay = {
enabled = 1;
};
com.apple.SafariKeychain = {
enabled = 0; };
com.apple.SafariKeychain = {
enabled = 0;
};
};`
};
};

Output

$ perl -0777 -pe 's/com.apple.ApplePay = {\s*\n\s*enabled\ =\ 1;/com.apple.ApplePay = {\nenabled\ =\ 0;/g' file1 2> /dev/null
12345678 = {
CreatedOnToolsVersion = *.*.*;
DevelopmentTeam = *;
LastSwiftMigration = *;
ProvisioningStyle = Manual;
SystemCapabilities = {
com.apple.ApplePay = {
enabled = 0;
};
com.apple.SafariKeychain = {
enabled = 0; };
com.apple.SafariKeychain = {
enabled = 0;
};
};`
};
};

For in place replacement use

 perl -0777 -pi -e 's/com.apple.ApplePay = {\s*\n\s*enabled\ =\ 1;/com.apple.ApplePay = {\nenabled\ =\ 0;/g' file1  2> /dev/null

Thanks a lot, I can see the output in terminal but when I open the file again I see the original value only — att, Aug 15 '17 at 20:04
@att I have updated the answer. You need to pass one more parameter to perl for inplace replacement. — Hakan Baba, Aug 15 '17 at 20:10
@att Some best practices to address received answers: If any answer (not necessarily this one) has worked for you, you can think about these [steps](https://stackoverflow.com/help/someone-answers). — Hakan Baba, Aug 16 '17 at 00:15

hek2mgl · Answer 2 · 2017-08-15T20:26:51.133

0

You can use the following GNU sed command:

sed -r '/apple\.ApplePay/,+1s/(enabled =).*/\1 0;/' file

Explanation:

/apple\.ApplePay/,+1 is a range of lines starting with the pattern apple... until the next line.

s/(enabled =).*/\1 0;/' replaces everything after enabled = by itself plus 0;

edited Aug 15 '17 at 20:26

answered Aug 15 '17 at 20:18

hek2mgl

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Need help to replace value to zero(enable)

2 Answers2